NETWORK SYSTEM AND NETWORK METHOD

• US 20150089024A1
• Filed: 05/15/2014
• Published: 03/26/2015
• Est. Priority Date: 09/25/2013
• Status: Active Grant

• Current Assignee: Hanwha Vision Company Limited (Hanwha Corporation)
• Original Assignee: Samsung Techwin Corporation (Hanwha Corporation)
• Inventors: CHO, Sung Bong, CHEON, Hee Jin, NA, Young Hun
• Granted Patent: US 9,794,317 B2
• Time in Patent Office: Days
• US Class Current: 709/219
• CPC Class Codes: H04L 47/2416 Real-time traffic
• CPC Class Codes: H04L 47/25 with rate being modified by the source upon detecting a change of network conditions
• CPC Class Codes: H04L 65/612 for unicast
• CPC Class Codes: H04L 65/613 for the control of the source by the destination control signals issued by the client directed to the server or network components specially adapted for selective content distribution H04N21/637
• CPC Class Codes: H04L 65/752 adapting media to network capabilities
• CPC Class Codes: H04L 65/762 at the source reformatting of additional data in video distribution servers H04N21/2355

Abstract

Provided are a network system and a network method. The network system includes: at least one network camera; at least one client configured to receive an image or a moving image from the at least one network camera; and a network configured to relay communication between the at least one network camera and the at least one client, wherein the at least one client is further configured to transmit an auto traffic control (ATC) priority and a setting corresponding to the applying of the ATC function while requesting to be connected to the at least one network camera.

Claims

1. A network system comprising:

at least one network camera configured to apply an auto traffic control (ATC) function for adjusting at least one of a frame rate and a bit rate of image data, based on a network congestion state;

at least one client configured to receive the image data from the at least one network camera; and

a network configured to relay communication between the at least one network camera and the at least one client,

wherein the at least one client is further configured to transmit a setting corresponding to the applying of the ATC function while requesting to be connected to the at least one network camera.

2. The network system of claim 1, wherein, even when the ATC function of the at least one network camera is in an on-state, the ATC function is turned off based on the setting corresponding to the applying of the ATC function.

3. The network system of claim 1, wherein the applying of the ATC function comprises applying a value included in a user-agent field, in response to the at least one client being connected to the at least one network camera by using at least one of a real-time transport protocol (RTP) and a real-time streaming protocol (RTSP).

4. The network system of claim 1, wherein the at least one client is further configured to transmit an ATC priority while requesting to be connected to the at least one network camera.

5. The network system of claim 4, wherein the at least one network camera is further configured to turn the ATC function on or off based on a network congestion state of a client whose auto traffic control priority is highest from among the at least one client.

6. The network system of claim 4, wherein the ATC priority is included in a user-agent field, in response to the at least one client being connected to the at least one network camera by using at least one of a real-time transport protocol (RTP) and a real-time streaming protocol (RTSP).

7. The network system of claim 4, wherein a type of the at least one client comprises a viewer device or a storage device, and

wherein the ATC priority of the storage device is higher than that of the viewer device.

8. The network system of claim 1, wherein the at least one network camera is further configured to turn on the ATC function based on the network congestion state.

9. The network system of claim 1, wherein, in response to the ATC function of the at least one network camera being turned on, the at least one of the frame rate and the bit rate of the image data transmitted from the at least one network camera to the at least one client is reduced.

10. The network system of claim 1, wherein the network is further configured to use at least one of a real-time transport protocol (RTP) and a real-time streaming protocol (RTSP).

11. The network system of claim 10, wherein a user-agent field of the RTSP comprises ATC=ON or ATC=OFF.

12. The network system of claim 11, wherein, when the at least one client is a network video recorder (NVR), the NVR comprises ACT=OFF in the user-agent field.

13. A network method comprising:

storing a setting corresponding to application of an ATC function, wherein the storing is performed by at least one client;

transmitting a connection request to a network camera along with the stored setting, wherein the transmitting is performed by the at least one client;

determining whether to apply an ATC function based on the setting and a network congestion state, wherein the determining is performed by the network camera; and

reproducing or storing image data received from the network camera, wherein the reproducing or storing is performed by the at least one client.

14. The network method of claim 13, wherein, in response to the ATC function of the network camera being turned on, at least one of a frame rate and bit rate of the image data transmitted from the network camera to the at least one client is reduced.

15. The network method of claim 13, wherein, even when the ATC function is in an on-state, the network camera turns off the ATC function based on the setting corresponding to the application of the ATC function.

16. The network method of claim 13, wherein the setting comprises a value included in a user-agent field of at least one of a real-time transport protocol (RTP) and a real-time streaming protocol (RTSP).

17. The network method of claim 13, wherein in the transmitting of the connection request, an ATC priority is also transmitted.

18. The network method of claim 17, wherein the network camera turns the ATC function on or off based on the network congestion state of a client whose ATC priority is highest from among the at least one client.

19. The network method of claim 17, wherein a type of the at least one client comprises a viewer device or storage device, and

wherein the ATC priority of the storage device is higher than that of the viewer device.

20. A non-transitory computer readable medium having recorded thereon a program, which, when executed by a computer, performs the method of claim 13.